PAIRING WITH SOURCES:-
The D10 houses a single dynamic driver and has a impedance of 16ohm and sensitivity of 100db making it one of the most compliant IEM I have used for a while. Driving it out of mobile phone is not a problem at all. Pairing it with more powerful sources and AMPs doesn’t yield any improvement either. I tried it with the Busron Playmate and it lost some of its lower end volume while delivering faster and lighter mid and treble notes.
If you want an IEM that can be driven without any problem across a handful of sources the ISN D10 should be considered a top contender. Drive it out of any dongle and just enjoy!!
HOW DOES THIS SOUNDS:-
Yes, some brands use dynamic drivers and still manage to deliver a balanced sound but D10 doesn’t have any intensions of being on the balanced side. It delivers wholesome amount of bass with plenty of volume. The 9mm dynamic driver doesn’t shy away from expressing itself. The overall sound signature is slightly V shaped without any veiling. Tonality and timber have a hint of metallic feel though. The warm and slightly brighter tonality takes me back in memory but thats in past…
I am using the stock white tip with green cores. Switching to wide bore tips takes away the essence of this IEM.
The ISN D10 has bass in its heart. It drivers the whole sound while delivering plenty of thump. The 9mm dynamic driver has excellent sub-bass extension and rumble. This extension can be compared to the much more expensive Jomo Percusion P3. The mid bass has a wholesome and full bodied feel to it, giving a well rounded feel to the lower end delivering a punchy but a not so hard slam. Upper bass deliver very good amount of details and merges nicely into the lower mid region.
The decay speed is slightly on the slower side with a bit of cushy feel to it. It is allows the note to precipitate without much restriction take it very close to bass-head Level. Just like most of the dynamic driver IEMs the D10 has good amount of juiciness and very good amount texture.
Where does it stand? It stands well over the BA based IEMs and is in the league of TFZ King series but with better sub-bass presence.
The mid range is slightly recessed while maintaining good energy and transparency. Thanks to good tuning there is no dip in energy or clarity while transiting from upper bass to lower mid region. Notes are aptly agile and detailed for a dynamic driver IEM. Much better than the Moondrop KXXS which feels recessed and veiled. The D10 delivers musically inclined notes with slightly thicker base while curbing on sharpness. There isn’t much bite but still leaves an impression. It has nice technicality even without excited or energetic notes. D10 does not have very precise or accurate notes like the DM7 but it is smoother and calmer. Micro details retrieval is very good, the background acts too have nice clarity.
Vocals are a pleasant surprise. Given the vigor shown by the bass the vocals manage to pierce out of bass region. It effortlessly penetrates the plane made by the bass notes. This exhibition of ability shows the quality of tuning that went into it. It does two things, first, it restricts the notes from being sharp and 2ndly it takes out a bit of shine. Those who like a mid forward, slightly energetic, a bit sharp and crisp vocals will find this to be neutral. Both male and female vocals sound similarly impressive while maintaining very good amount of details and texture, let it be Ben Howard or Nina Simone, all of them sound fairly accurate. The upper mid is not sharp while having good energy and transparency. The whole mid range is slightly on the lush side. Notes could have been a bit more agile.
The D10 delivers a fairly good treble region with very good instrumental clarity and details. It does not have plenty of spark or energy like BA based counter parts and is not the most revealing either, the presentation too is on the smoother and musical side.
Transition from upper mid to lower treble region is nicely energetic and is clear of any sibilance or peaks. The D10 has very good leading treble extension as it maintain very good amount of energy and clarity even when it goes higher in FR. Level of details retrieval is nice while keeping the timber acceptably natural. Cymbals and pianos have nice transparency, just don’t expect sharp and tingly instruments and plenty of details retrieval and the D10 won’t disappoint. It just simply doesn’t have a lot of micro details for the detail hogs. Separation and layering is nice with good amount of air and space between instruments. The treble stage is well spread with good density to it. If you love clean and inoffensive sound, the D10 fits the bill.
STAGE AND IMAGING:-
The ISN D10 has a well expanded stage for an under $200 IEM. It has very good height and depth while the width is slightly on the narrower side. The stage in whole has a fairly big dimension, bigger than the BGVP VG4 and TSMR 2. I love the way it places cues further, exhibiting its sonic abilities, something the BA based IEMs can’t take pride in. Nearly 80% of the vocals and some instruments are placed inside the head while majority of the stage is projected outside the head giving it a more open kind of feel. As mentioned earlier the bass takes the center stage but it doesn’t spoil the broth, it works much more like a layer and the instruments are placed either side of it.